Auxiliary check valve



Jan 6; 1931; H. w. A. LEHNERT AUXILIARY CHECK VALVE Filed May '7, 1927 y Patented Jan. 6, 19,314`

res

'HENRY A. LEHNERT, OF' NEW Yoiix; n. Y.

AUXKILIARY CHECK VALVE vImplication' 'led May 7,V 1927. Serial No. 189,477.

This[invention-relates toplumbing appli- K anccs, and more particularly Iaims to provide ya new and improved valve means especially useful for automaticallyv closingl a Water sup- -.5 ply conduit, asfor instance one leading to a bath-room faucet, spigot or shower-head, on

removal of or injuryto the valve handle orldinarily used `for openingand closing said valve means.vv f. 1

le An objectof the inventiony is te provide ra valve means, for use in any iuid supply line, Whereinthe aforesaid automatic shut-olffeature'is incorporated, and wherein Vthere is .incorporated a valve-memberwhich may be sie one manually moved relativeto its seat While setting the line tolluid-delivery condition at an intended -po1nt,.and may at the Sametime `be valvermember functioning when the automatic -.valve-cl0sing operationA occurs.

Thenythe invention is thus embodied,.such

1 embodiment may be. incorporated, practically, reliably, andl inexpensivelyyin modern Y plumbing," as :particularly :exemplified .in ,the

` Ymodern bath-room, Wherethe points of fluid eff deliveryfaresomedistance removed from the 'locations ofthe-controlling valves. ,Y n Another objectgl-is to providegainanually operable"Water-supply orfplumbing ,valve which may lincorporatea plurality of valve ffrmembers Which maybe set'l simultaneously,

say manually inthe ordinary'way, as by spiral adjustmentof a; single' threadedj stem f member carrying the valve handle, forthe intendedtemporary. -Water delivery; andv at ri-7 the Sametime a valve including a 'valvemember; Which autoinaticallylcloses the valve, v:immediately on the occurrenceof suoli accidental maladj ustment Y of the parts as Would, in the Aabsence o-ftliis automatieclosing feature, cause' or tend tocgcauseleakage orfflooding at theplace ofsuch maladjustment.

."Still another, abj ectis to provide .a `Watersupply v'al'veimeanswherein a manual device Y :is provided/for,operating;a first valvemem- #e5 ber to"causethe.delivery Ofasupply ofwater at a'givendi'scharge,pein'aand there is Y rprovideda second .valve memberfor` autoinaticallyf/cut'ting "olf" the, -Vvvater ifsupply, ,on

-- unintended;disassembly; or f abnormal assem- '50 bly, ofsaidginanualdeyice and the first valve.

`Another lobject nis to; provide,y in a fluid vvn'filve-means, a valve member, which is always automatically urged by thelluid-pressure to- `Ward closed condition and Which at the same time may bemoved' relative to its seat by ,manual means including a faucet handle or other similarly exposed and accessibleop-erating device.y i l Anotherobject is to vprovide a water-supply valve including manual. operating means and .a plurality of valve-members so assof ciated with eachother and with the Watersupply line that on operation of said manual means one valve meniberismovedavvayfrom its seat,thereby to open the line at one point and simultaneously the other valve member is held against-full seating, thereby to maintain said line open Aat another point.

Still another and more .specific object is to provide a Watensupply valve means -vvherein dislocatable `wilveunember controllable by y manual means, and an automatijcfclosing valve actuated by the Water pressure, are provided, toV function in such mannerthat the last-mentioned valve member -isnon interferent with 'the first-mem ftionedvalve member duringnormal operations, butjto insure seating ofthe automatic r`valvemember. by Water pressune'on dislocation lof the first-mentionedvalve member.

Various other objects and Aadvantages of theinventioni than those hereinabove inen. tioned Will be specifically pointed out or Will bei'V apparent hereinafter, in the course ofthe below detailed Vdescription of thefforins. of j,

the'inven'ltionlshovvn, in the' accompanying drawing, as preferred ones ofthefvarious possible embodiments ofthei'nvention; it beiis ,consistentavith the prior art;

feo

` signed'for overcoming a certain plumbing trouble, although theinvention maybe othercluding wall faucet-handles operableto causeY ,embodimentof Inthe accompanying drawing:

Fig. 1 is aside elevation of a part of a plumbing system serving a bath-room and 1nwater discharge at aY shower-head .or tub faucet; c A f Fig. 2 shows certain of the parts ofF ig. 1 in frontV elevation; f 'j Fig. 3 is mainly .a vertical sectional View, on an enlarged scale, taken on 3 3 of Fig. l2;

Fig. 4 is a similar View, but on still Va larger scale, showing certain valve parts in a different adjustment Fig. 5 isa reproduction of Fig. 4,- exceptV vthat certain valve parts are in stlll another adjustment and others are absent F`ig.,6 is a section on line 6-6 showingthe same collection of valve parts as in Figs. 37,4 and 5, but in bottom plan;

Fig. 7 is a sectional view showing another valve-means according to the invention; f y y v Y y Fig..8 is a view similar to Fig. still another embodiment; and Y 7, showing Y Fig.v 9 is an end elevation ofthe parts shown 'in Fig. 8,*loolri'ngto the right in Fig. 8.

Similar reference characters refer to similar parts throughout the several views.

vThe embodiments of the invention illustrated in'these views-are particularly Vdewise applied, ofcourse.

This trouble follows: Y

In those -Water supply systems forming maybe lbriefly explained as part of the equipment of modern bath-rooms,

' fis itis common to employa piping systemV such as that shown'in Figs. 1 and2, where hot and cold Water supply lines are provided asiny dica'ted at 10 and l1,- and such lines have 'therein valve-means operated-by faucet han-v dles located some distance ahead of the points of water discharge. In the typical'case illustrated, there are fourfof Vthese handles,'as

Y indicated at 12, and twodischarge points, one

aV tub faucet 13 and the othera showerhead 14.

Ordinarily the valve means just referred to vare located in line with the faucet handles,

and include valve-members controlled solely bythe handles and moved toward and away i` from their seats by spiral movements ofthe stemsk l12a onv whichV said `handles yare fixed, W The ,stems are suitably threadedly mounted Y withinv housings extended jinto branch pipes Y` 15, andthe housings arepartially contained within'or covered Yover by finishing-itments 16. Often, also, between-the 'wall 17 and'l the fitinents 16, a mass of plastic material is applied and allowed toset inplace, as indicated Fig. V3 showsA l typicall housing for a stem 12oz.l -Here the stem is threaded in the inner` end of a long collar 19, whichcollar is threadof Fig. t,

ed in branch pipe 15;` while a gland 20 is threadedin the outer end of the collar and also in a cap 21 in retaining engagement with Vitment 16. The arrangement of threads is such that the stem 12a is turned to move the stern to the right, that is, tounseat any suitable valve-,member at the left end ofthe stem,

such stem turning, if carried` toojfar, will unscrew thecollar 19 from the branch pipe 15. This is what often actually occurs; caus- 'ing a Hooding through the right end of the branch pipe, Vand over one or both sides of the wall 17.

, The present invention is particularly adapted toinsure againstany such damage, as will nowfbe explained.

In'this connection, see'Figs. 3, 4, 5, and 6;

Vrepresenting a form of the invention which Vseats are provided, one facing outwardly.to

ward the faucet handle, as indicated at 22 (Fig. 4), and the other facing inwardly, toward the pipe 10 or 11,'as indicated at 23.

`The valve-member, indicatedrat 2.4, which coacts'with the last-mentioned valve seat, isA

Apart of a floating valvestructure, and so ar- ;rangedasto bel always-automatically urged Ytoward its seat by the Water pressure in pipe 11.k Steam 12a is not directly or positively vconnected with the valve member' 24, a1-

though operating the handle 12 in valveopening directionto advance'the stem axially torthe'right, allows a relative movement between the'val-ve-member24 and its seat 23 Kin-responseto' the water pressure, but not sufficiently to affect thejWater-flow toward seat 22.' In order: to attain this result, a device is carried on the Vinner end of the valve -stem 12a' having a conical. extension 25 the A smaller end of which is in linel with the stem l 26 of the floating valvefstructure.

Thisconical extension is backed byv a disc-portion 27 presenting an annular face carryinga washer 28. Washer 28 constitutes the valve-member for coactinglwith seat 22;

vthe parts 25 and 27 being integral with a p'e- -ripherally grooved shank 29 set rotatively in va recess 30 in the enlarged inner end of stem 12a and therein retained bya screw 31.

Thus operation of the faucet-handle as last described, also moves valve-member 28 off itsseat22toV open up full water-supply com- Vmunication between pipes 11 and 110.

The-floating valve structure is madeY up Y' of thefcentral stem 26, thervalve-niember 24 intermediate theA ends ofthe stein, and radially offset-ribs or fins 32y and33.

lso

j A ,nipple ory sleevc 34` is screwed` into a threaded hole in the Wall between pipe 11 and the branchpipe` 15, so as to extendl on opposite sides ofsaid wall. This sleeve carries withinv the same the valve seat 23 for the valvemember 24;y and to the right of this seat is a bore 35 of smaller diameter, and to the left thereof arbore 36 of larger diameter. The larger bore is a'guide for the fins 32,' and thesmaller bore is a guide for the fins 33 of the Heating valve structure. Between the right end of the smaller bore 35, and the valve seat22, also carried by sleeve 34, is an outwardly flaring substantially conical recess coaxial with thev bores and 36, so as to receive completely the conical extension 2501i the inner end of the stem 12a when the areV arranged as shown in Fig. 3. l

As the parts are shown in Fig.3 (and also in Fig. 6)the valve is in closed' condition, so` far as the Afaucet`13 is concerned;because the only way for the water in pipe 11 below the valve to reach the pipe 110 is by passage throughthe hollow interior of sleeve34 and thence past valveseat 22 into pipe 110, as

vindicated by the arrows of Fig. 6. However,

in Fig.V 3, as willbe noted, the valve-member 28 is tight against its seat; kand consequently, evenv though valve-member 24 is maintained at the maximum separation from its seat, water may. only flow through pipe 11 above the valve now being describedto the similar valve connecting with cross pipe 111 serving the shower-head 14.y Fig.4 shows the parts as they'are disposed when ythe stem 12a of Fig. 3 is turned to move y the same to the intended limit of its travel to the right, to turn on the water relative to faucet 13. Then water may flow from pipe 11 to pipe 110,v asindicated inFig. 4, sincel both valve-members 28' and 24 are spaced from their seats 22 and 23. 1 v

In Fig. 5 is illustrated what happens when too far turning of the stem '12a in the direction last-mentioned, results in an inadvertent Yremoval of stem 12a and-the parts directly or indirectly carried thereby, Jor even lin .a breaking away of the collar 19 from pipe 1,5. The waterfpressure in pipe 11 has 'snapped .the valve-member 24 to instantaneous closure against its Aseat 23, and a flooding through pipe 15of water under pressure in pipe 11 below the valve, cannot occur. f

It will'be noted that sleeve 34 and theiioating valve structure therein may be furnishedv parts 36of sleeve 34, the sleeve may be slotted as indicated at 38; and to insure adequate water iiow out of the opposite end 4of the sleeve, the conical recess at said end is a true conical recess adjacent to valveseat 22, and as shown 'best in Figs. 4 and.y 5, such true recess is fed by slots 22a cut 90 apart around a cylindrical guide-bore in the recess for fins 33, for establishing longitudinal fin-guiding ledges 22b1in prolongation of bore 35.

Referring to Figs. 7 and 8, these views, showing somewhat modified si1b-assemblies 0f sleeve and ioatingvalve'structure, illus trate very clearlyl the slots 22al and ledges 22?) `above referred to; such slots and ledges ybeing here shown as alsoincorporated in the sleeve 34 of Fig. 7 and in the sleeve'3'4 of Figs. 8 and 9. A

Iii-theform of the invention shown in Fig. 7 and also yin the form shown inFigs. 8 and 9,the valve seats 22 and' 23, the bores 36 and 35, and the vconical recess between the latter and valve seat 22, will all be' observed. Also,

there is present in each form a iioating valvev structure including a central stem 26", a valve member 24 and a set of guiding `fins 33, all as in Figs.- 3, 4, 5and 6. In the forms'of Figs. 7 and 8, the central stems 26 are notprojected*outwardly beyond ins33 as inFig. 3; but an equivalent'of such missing stem-'projection may be carried as a partof the `stem 12aof F ig. 3, at the inner end there/cf. Y f

In Figs. 7 and'8 the central stems 26 are `prolonged considerably as indicated at'26 in Fig. 7 and at 26,1/ in F ig.` 8. These prolongations 26m and 26?/V are squared, l and threaded, respectively'.I

AIn thecas'e of Fig. 7 the squared stem p0rtion 26m is slidable through a square hole lin a guide member 39, and a pin 37, similar in function to the pin 37 of Fig. 3, is provided to limitshifting lof valve member 24 thus a1- ways to maintain fins 33 within bore 35. Then, auxiliary guiding ins,corresponding tothe fins 32 of Fig. 3,.maybe safely omitted.

Member 39 is a male .nut Yspirallyadjustable of suchbore is provided with a spiral series of `aperturesj40; so that nut 39 may be set to predetermine a desired water flow past the' valve member 24.

i -V In the casenosf Fig. 8, the threaded stem portion 26?/ vhas spirally adjustable thereon a nut 41 provided with diametricallyopposed projections "41a slidable along slots 42 cutalong the boundingwall ofY bore 36.l This arrange,

ment provides thenut,41,notonly as a substitutefor auxiliary fins such as are indicated.

at 32 in`lf`igi3, but also as an adjustable balancer fori-ins- 33; particularly whenfsome'` means (not shown) `is provided toi limit I 'shifting of valve'member 24 soV far to the left -as to move fins 33'out-0f bore 35. And if the stop-means last referred to, say a cross-pin vin the threaded' part `of bore 36, and-the wall Gil s Y 2. An auxiliaryyalve structure poses described, comprising a unitary bodyY Aexternall threaded at an intermediate point like the pinf et Fig. 3, is arranged to en-YY .gage nut il ratherthan the left end of lstem portion 2li/y, the nut may also serve as an adguster i'or the intended action of such stopmeans. Finallynote that the slots 42 act not -only to guide nut `projections fila, butalsoVto-provide Water-tion passage like the slots 38 Fig. 3. j

Inasmuch as many changes Vcould beLmade in the above constructions,and many apparently Widely different embodiments of the invention could be made Without departing from the scope thereof` itis intended that all matter contained in the above description or shown inthe accompanying drawings shall `be interpreted as illustrativel and not in a poses described, comprising a unitary body externally threaded at an intermediate point of its length for insertion in a threaded aperture, the body having adjacent the threaded portion a shoulder adapted for compression vof packing against a Wall at said aperture,

and the body also having a Vpassage therethrough and alsohaving one end formed as'A a seat for a main valve with which the auxiliary valve cooperates, a stem 1n said passage, guide flanges on the stem engaging tliepas- -sage Wall, and avalve on the stem cooperating with a valve seat formed in the passage,

the body havin,a a tubular extension with innendiameter` larger than that of the passage', communicating therewith and Aaccommodating the valve With peripheral clearance When the valve is in open position. Y Y

for Vpurof its length forinsertion in athre'aded aperbe un( erstood that the lanl3. An auxiliary valve ,structurefor purposes described, comprising a unitary-body externally threaded at an intermediate point of its length-for insertioni'n a threaded aperture, the body having adjacent'the threaded portion a-shoulder adapted-'for compression of packing against a Wall at said aperture, i Y and the kbodyfalso having' a passage therehrough and also havingone end formed as a seat for a main valve with Which the auxiliary valve cooperates, a stem in said passage, guide liangesofn the-stem engaging the passage \vall, and a valve on thestem cooperating' with a valveseat formed in the passage,

the body having a tubular extension with innerc liiui'ieter larger thanthat of the passage, "connnunicating Vtherewith and accommodating the valveWith peripheral clearance When the valve is in open position, the

stein' having adjacent the valve, spaced members engaging the' extensiony Wall;v

Ltr-in vauxiliary valve structure for spur'- poses described, comprising a body externally threaded; atan intermediate point of its length-.for linsertion in a threaded aperture, the body having afpassage therethrough and also having one end formed asa seat for 'amain valve with WhichJthe auxiliary valve j cooperates, a'l stem in said passage, guide flanges on the stein engaging the passage Wall, land a1 valve on the stein cooperating with a Vvalve, seat formed inthe passage, the passage having, adjacent the valve Vseat first nam' cl. longitudinal channels providing for increased liquid flow.

Y In testimonyfwhereof I affix my signature. Y. I-IENRYVA. LEHNERT.

my@ thebody having adjaeent the threaded 'y portion a Ishoulder .adapted for compression of packing-against a Wall at said aperture, and the body also having a .passage therethrough and also having one end formed as la seatfor a main valve With'vvhichthe auxiliary valve cooperates, astem in sa'id passage, Y

guide `flanges on the stempengaging the pas-l sage vWall,andravalve on the'stem cooperating With-a valve seat formed in'Y the passage, *the body having a tubnlarextension,with innerdiameter larger than that othe'passage, A

communicating therewith and -accommodat-V`Y` A ingfthe vvalve Withperipheral clearance When the ,valve is in open position, said extension -Y having slots in its -Wall -for lateral admission y of liquid.. 

